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50 - English
Fig 72
Fig 73
7.
If required, remove the crankshaft bearing from the
crankcase.
Proceed as follows:
A. Remove the oil rell cap.
B. Heat up the crankcase half in question to 200°C.
C. Use protective gloves. Press the bearing out of
the crankcase half.
8.
If the crankshaft bearings are still attached to the
crankshaft when dismantling, pull them off using
the 531 00 48-67 pulling device. See gure 73.
Also inspect the bearing grip in the crankcase half.
Cleaning and inspection
NOTE!
If the bearings are fitted to the crankcase,
take care to prevent any dirt and foreign
particles from entering.
Clean all parts and scrape off all gasket remains
from the contact surfaces on the crankcase halves.
Check the following:
1.
That the big-end bearing does not have any radial
play. Axial play is permitted. See gures 74 and 75.
2.
That the big-end bearing does not have any score
marks or is discoloured on the sides.
3.
That the bearing surface for the gudgeon pin bearing
does not have any score marks or is discoloured.
4.
That the crankshaft bearing has no play or knocks.
5.
That the sealing surfaces of the sealing rings tted
against the crankshaft are not worn, and that the
rubber is not hard.
6.
That the crankcase is not cracked.
Fig 74
Fig 75
Repair Instructions